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THE INDIA RUBBER WORLD 



March i, 1907. 



PEN BARREL CHASING MACHINE. 



TlllC accompanying illustration is that of a machine for chasing 

 the barrels of fountain pens. To the casual observer the 

 matter of ornamenting a pen barrel would signify little, but in 

 reality much is involved in this branch .)f pen making, and many 



Pen Barrel Chasing Machim 



kinds as there are different designs in chasing are employed. 

 The machine in question is manufactured by A. Adamson, Akron, 

 Ohio, and has the distinction of being a pionet-r in tliis line of 

 work. 



JACKSON BELT LACING MACHINE. 



""PllE belt lacing problem has been very materially simplified by 

 ^ the invention and the recent improvements made on the 

 Jackson Belt Lacing Machine. It is simple in construction and is 

 said to operate at a saving of time and expense. The rolls of 

 this little machine are of hard tool 

 steel and all the parts are inter- 

 changeable and can be easily replaced, 

 should necessity require, without the 

 return of the machine to the factory. 

 The wire coil lacing which is used 

 with this machine is durable, makes a 

 perfect hinge, and slips over the pul- 

 leys without friction, thereby reduc- 

 ing the vibrations, and consequently 

 the wear, upon the bearings and 

 shafting. Tests of 2j4 inch belting 

 have shown that this wire coil has 

 stood a tensile strain of 1.900 pounds 

 without breaking or pulling apart 

 .Another feature to its advantage is 

 that the joining is the same on both 

 sides of the belt, giving an even sur- 

 face, which is so desirable for smooth 

 running, while the advantage that comes from being able to con- 

 nect and disconnect a belt at a moment's notice can hardly be 

 overestimated. The cost of lacing a 5 inch belt is but one cent ; 

 of a 10 inch belt two cents, and a 6 inch belt can be laced com- 

 plete in three minutes. The Jackson belt lacing machine is 

 manufactured by the Birdsboro Steel Foundry and Machine Co.. 

 Birdsbnro. Pennsylvania, and is in use in many of the govern- 

 ment plants, as well as in factories all over the country. 



Belt L.\cing Machine. 



WHAT'S WRONG WITH CEYLON RUBBER? 



""PO THE Editor of The India Rubber World : Is it not time 

 ■*■ that some one voiced a protest regarding Ceylon rubber? 

 ."Xs one who has followed this commodity rather closely, and as 

 one of the earliest users, I would like to impart to your valuable 

 journal my reasons for asking the above question. 



When we first received samples of Ceylon rubber we were 

 certainly struck by its beautiful appearance, its cleanliness, and so 

 on. We found itf tensile strength quite up In any Para : for the 



purpose of making cement it was unequalled, because it had a 

 swell that figured up at least 7 per cent, better than Para. 



But withal we moved slowly; we watched it; and finally satis- 

 fied ourselves that here was a rubber made scientifically and by 

 men of brains, and not by natives, who forced us to buy 20 to 40 

 IH-r cent, of dirt and water. And so we started to use it in fair 

 quantities. The goods looked nice and clean, and we congratu- 

 lated ourselves. 



.And now what has happened? Its uniformity has all gone, it 

 comes in all shapes and in all shades, its tensile strength is lower 

 than the .Africans, it won't cure, some of it is soft, some of it is 

 hard. 



What have our friends in Ceylon been doing? Experimenting? 

 1 1 so, back to firsi stages; they are oiT the track. We made a 



rge batch of cement with it recently and the swell was not 

 lore than 25 per cent, of what it was formerly, and should be. 



hen agam, we find variations in the same case. Why mix it? 

 Placing some weak rubber with the good won't do any good ; it 

 only spoils the whole lot. 



For the sake of the Ceylon rubber industry it is to be hoped that 

 growers will come to their senses and stop fooling before it is 

 too late. The fact that a sample of Ceylon rubber looks good 

 does not prove that it is good. We know that to our cost; all 

 users know it. If the growers plead ignorance of what is required 

 by the manufacturers, let them import a practical man from some 

 manufacturing country. 



Ceylon rubber should be just as reliable as upriver fine Para; 

 why isn't it? a. d. thornton. 



Montreal, Qutbec, February 16, 1907. 



THE "EVER READY" VULCANIZER, CAR MODEL. 



For the use of a special rubber compound for filling tire punc- 

 tures. Made by the .'\uto Improvement Co., New York. 



The Kokomo Rubber Co. (Kokomo, Indiana) are out with a 

 new cycle tire — the "New Oxford" — that is making very many 

 friends. 



